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national prototype of the kilogram for checking
释义
national prototype of the kilogram for checking
Encyclopedia
工学
质量计量技术
释
national prototype of the kilogram for checking
1千克质量作证基准砝码
为了监测1千克质量基准砝码的量值是否发生变化而专门设立的复制件。
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β Cephei variable stars
β Cep star
β chloroethanol
β-chloroethanol
β CMa star
β CMa star
β-compactification
β decay
β+ decay
β-decay
β-decay electron
β-delayed decay
β-delayed fission
β delayed neutron emission
β delayed proton emission
β-DF
β-D-fructofuranosyl-α-D-glucopyranoside
β-D-glucosidase
β disintegration
β-disintegration
β-distribution
β-diversity
β dose
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β-D-葡萄糖苷水解酶
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